I have the same problem i tried all proposed solutions none work. I have 1 GB ram pc, 256 MB Nvidia gforce 4 2.8 Ghz pentium 4.. and a regular USB Genius mouse. This problem suddenly started and not only with LimeWire with diffrent Java based applications.. if anyone comes up with a good solution please let me know...

What about the possibility of trying out the Java 1.6 beta. The problem though is LW won't use it if there's any other Java versions installed. So you'd need to remove those 1st, then install Java 1.6; http://java.sun.com/javase/6/download.jsp JRE "Offline" version which is a 15.72 MB download. It's had good reports by members on the forum.

It's the 3rd on the list: Java Runtime Environment (JRE) 6 Beta 2
The Java SE Runtime Environment (JRE) allows end-users to run Java applications.

well i checked LW works fine at my friends place and on my laptop they both use JRE 5.0 update 6... i have update 9 so am gonna try removing them then running LW and ill c what happens and ill get back 2 u :)